I used to go to a Catholic school. (I used to get taught French by a nun.) It was the oldest school of Belgium and it had a lot of history. There is this one room which is almost completely shot apart during the war. There's also a chapel inside the school. Apparently somewhere in that chapel lies the heart of a priest who meant a lot for the village that school is located in. (As in it literally lies there somewhere in a bowl or something.) The entire school is built in Art Nouveau style and it's really pretty but slowly falling apart.
I heard it used to be a boarding school for English girls or something like that. That's why there are still dorm rooms in the school although they are not used anymore (except for once when a Flemish band recorded its video clip there).
The students were kind of okay, I guess. We did have a slightly bad reputation in the neighbourhood. Apparently my school was quite often the last school someone could get into after being expelled from other schools.